<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      * {
        margin: 0;
        padding: 0;
      }

      body {
        background-color: #ccc;
      }
      .wai {
        width: 100px;
        height: 1000px;
        margin: 200px auto;
      }
      .qiqiu {
        width: 180px;
        height: 180px;
        background: pink;
        border-radius: 50% 50% 25% 50%;
        transform: rotate(45deg);
      }
      p {
        line-height: 180px;
        text-align: center;
        transform: rotate(-45deg);
        color: #fff;
      }
      .qiqiu::after {
        position: absolute;
        bottom: 5px;
        right: 5px;
        content: '';
        display: block;
        border: 8px solid transparent;
        border-right-color: pink;
        transform: rotate(45deg);
        border-radius: 50%;
      }
    </style>
  </head>
  <body>
    <div class="wai">
      <div class="qiqiu"><p>儿童专属</p></div>
    </div>
  </body>
</html>
